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Cheap flights from Seattle to Ireland from €239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 14/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Seattle to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:30 - 10:15
SEA
-
SNN
18h 45m
1 stop
United Airlines Logo
12:30 - 23:36
SNN
-
SEA
19h 06m
1 stop
€647United Airlines
Sun, 13 Sep - Wed, 16 Sep
United Airlines Logo
10:42 - 07:30
SEA
-
SNN
12h 48m
1 stop
United Airlines Logo
09:30 - 23:26
SNN
-
SEA
21h 56m
3 stops
€652United Airlines
Sun, 13 Sep - Wed, 16 Sep
United Airlines Logo
08:30 - 10:15
SEA
-
SNN
17h 45m
2 stops
United Airlines Logo
12:30 - 21:55
SNN
-
SEA
17h 25m
1 stop
€662United Airlines
Tue, 6 Oct - Wed, 14 Oct
Delta Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
Delta Logo
13:05 - 20:20
SNN
-
SEA
15h 15m
1 stop
€713Delta
Tue, 4 Aug - Tue, 25 Aug
Delta Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
Delta Logo
13:05 - 20:36
SNN
-
SEA
15h 31m
1 stop
€728Delta
Tue, 14 Jul - Tue, 21 Jul
Multiple Airlines Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
Multiple Airlines Logo
13:05 - 22:33
SNN
-
SEA
17h 28m
2 stops
€732Multiple Airlines
Tue, 14 Jul - Tue, 21 Jul
KLM Logo
07:15 - 11:10
SEA
-
SNN
19h 55m
1 stop
KLM Logo
13:05 - 23:20
SNN
-
SEA
18h 15m
1 stop
€756KLM
Mon, 3 Aug - Mon, 24 Aug
Multiple Airlines Logo
18:40 - 14:40
SEA
-
ORK
36h 00m
1 stop
Multiple Airlines Logo
15:40 - 11:25
ORK
-
SEA
27h 45m
1 stop
€762Multiple Airlines
Wed, 21 Oct - Mon, 2 Nov
JetBlue Logo
23:44 - 08:20
SEA
-
DUB
24h 36m
1 stop
JetBlue Logo
11:30 - 21:04
DUB
-
SEA
17h 34m
1 stop
€767JetBlue
Sat, 22 Aug - Wed, 2 Sep
KLM Logo
17:45 - 16:35
SEA
-
ORK
14h 50m
2 stops
KLM Logo
15:40 - 11:25
ORK
-
SEA
27h 45m
1 stop
€768KLM
Wed, 21 Oct - Mon, 2 Nov

Icelandair flights from Seattle to Ireland

Our best Icelandair deals on Seattle to Ireland flight tickets
Icelandair
13 Jul
SEA19:00Seattle/Tacoma Intl
32h 05m
1 stop
DUB11:05Dublin
26 Jul
DUB12:15Dublin
31h 30m
1 stop
SEA11:45Seattle/Tacoma Intl
€773
Icelandair
1 Oct
SEA12:30Seattle/Tacoma Intl
14h 35m
2 stops
DUB11:05Dublin
15 Oct
DUB14:15Dublin
14h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€777
Icelandair
10 Aug
SEA15:40Seattle/Tacoma Intl
13h 35m
1 stop
DUB13:15Dublin
27 Aug
DUB14:15Dublin
14h 25m
1 stop
SEA20:40Seattle/Tacoma Intl
€781

British Airways flights from Seattle to Ireland

Our best British Airways deals on Seattle to Ireland flight tickets
British Airways
12 Aug
SEA20:20Seattle/Tacoma Intl
13h 40m
1 stop
DUB18:00Dublin
18 Aug
DUB20:25Dublin
23h 10m
1 stop
SEA11:35Seattle/Tacoma Intl
€807
British Airways
25 Jul
SEA13:30Seattle/Tacoma Intl
23h 05m
1 stop
SNN20:35Shannon
31 Jul
SNN21:15Shannon
27h 55m
2 stops
SEA17:10Seattle/Tacoma Intl
€985
British Airways
30 Aug
SEA20:20Seattle/Tacoma Intl
15h 30m
1 stop
ORK19:50Cork
20 Dec
ORK11:55Cork
13h 00m
1 stop
SEA16:55Seattle/Tacoma Intl
€1,063

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 27 May 2026.
Use the filters below to find and compare flights from Seattle to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 13/9

07:30-10:15

1 stop18h 45m

Shannon

Wed 16/9

12:30-23:36

1 stop19h 06m

€647
Fastest return journey

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Sun 13/9

10:42-07:30

1 stop12h 48m

Shannon

Wed 16/9

09:30-23:26

3 stops21h 56m

€652

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 6/10

08:30-10:15

2 stops17h 45m

Shannon

Wed 14/10

12:30-21:55

1 stop17h 25m

€662

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 4/8

07:15-11:10

1 stop19h 55m

Shannon

Tue 25/8

13:05-20:20

1 stop15h 15m

€713

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 14/7

07:15-11:10

1 stop19h 55m

Shannon

Tue 21/7

13:05-20:36

1 stop15h 31m

€728

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Tue 14/7

07:15-11:10

1 stop19h 55m

Shannon

Tue 21/7

13:05-22:33

2 stops17h 28m

€732

SeattleShannon

SEA - SNN

SEASNN

Seattle/Tacoma Intl

Mon 3/8

07:15-11:10

1 stop19h 55m

Shannon

Mon 24/8

13:05-23:20

1 stop18h 15m

€756

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Wed 21/10

18:40-14:40

1 stop36h 00m

Cork

Mon 2/11

15:40-11:25

1 stop27h 45m

€762

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 22/8

23:44-08:20

1 stop24h 36m

Dublin

Wed 2/9

11:30-21:04

1 stop17h 34m

€767

SeattleCork

SEA - ORK

SEAORK

Seattle/Tacoma Intl

Wed 21/10

17:45-16:35

2 stops14h 50m

Cork

Mon 2/11

15:40-11:25

1 stop27h 45m

€768

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Seattle to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of November is another great option to travel to Ireland, with average flight prices from Seattle averaging around €258.

What is the cheapest Seattle/Tacoma Intl to Ireland flight route?

Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices

How far in advance should I book a flight from Seattle to Ireland?

You are more likely to see cheaper flights to Ireland from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €535 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as €419 on momondo.

What cabin class options are available on Seattle to Ireland flights?

There is only 1 cabin class available to choose from on Seattle to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Ireland flights?

No. A direct flight is the cheapest option for a flight between Seattle to Ireland.

Cheap Seattle to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland

Fastest flight time

9h 05m

Direct flights

Every day

Airports in Ireland

77 airports
The fastest flight from Seattle to Ireland takes 9h 05m
Direct flights go from Seattle to Ireland every day.
There are 77 airports in Ireland. From Seattle there are direct flights to Dublin (DUB).
Search flight deals

Frequently asked questions about flying from Seattle to Ireland

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?

    Prices for flights from Seattle/Tacoma Intl Airport to Ireland are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Ireland?

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Ireland for you.

Can I find flights from Seattle to Ireland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ireland from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Ireland?

momondo helps you find the best flight between Seattle and Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?

Price alerts on flights to Ireland from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €39
Flights to Corkfrom €84
Flights to Shannon, Clarefrom €89
Flights to Milltown (Kerry)from €36
Flights to Donegalfrom €77